/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchyController.h
Sets a new parent to an element. For elements that allow more than one parent the parent list will be replaced.
Returns true if successful.
bool SetParent &40; FRigBaseElement &42; InChild, FRigBaseElement &42; InParent, bool bMaintainGlobalTransform &41;